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krahets
2023-04-23 14:58:03 +08:00
parent 881ece517f
commit fe8027e64a
26 changed files with 344 additions and 626 deletions
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36
chapter_array_and_linkedlist/array.md
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@@ -213,8 +213,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
```csharp title="array.cs"
/* 随机返回一个数组元素 */
int randomAccess(int[] nums)
{
int randomAccess(int[] nums) {
Random random = new();
// 在区间 [0, nums.Length) 中随机抽取一个数字
int randomIndex = random.Next(nums.Length);
@@ -378,13 +377,11 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
```csharp title="array.cs"
/* 扩展数组长度 */
int[] extend(int[] nums, int enlarge)
{
int[] extend(int[] nums, int enlarge) {
// 初始化一个扩展长度后的数组
int[] res = new int[nums.Length + enlarge];
// 将原数组中的所有元素复制到新数组
for (int i = 0; i < nums.Length; i++)
{
for (int i = 0; i < nums.Length; i++) {
res[i] = nums[i];
}
// 返回扩展后的新数组
@@ -529,11 +526,9 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
```csharp title="array.cs"
/* 在数组的索引 index 处插入元素 num */
void insert(int[] nums, int num, int index)
{
void insert(int[] nums, int num, int index) {
// 把索引 index 以及之后的所有元素向后移动一位
for (int i = nums.Length - 1; i > index; i--)
{
for (int i = nums.Length - 1; i > index; i--) {
nums[i] = nums[i - 1];
}
// 将 num 赋给 index 处元素
@@ -648,11 +643,9 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
```csharp title="array.cs"
/* 删除索引 index 处元素 */
void remove(int[] nums, int index)
{
void remove(int[] nums, int index) {
// 把索引 index 之后的所有元素向前移动一位
for (int i = index; i < nums.Length - 1; i++)
{
for (int i = index; i < nums.Length - 1; i++) {
nums[i] = nums[i + 1];
}
}
@@ -807,17 +800,14 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
```csharp title="array.cs"
/* 遍历数组 */
void traverse(int[] nums)
{
void traverse(int[] nums) {
int count = 0;
// 通过索引遍历数组
for (int i = 0; i < nums.Length; i++)
{
for (int i = 0; i < nums.Length; i++) {
count++;
}
// 直接遍历数组
foreach (int num in nums)
{
foreach (int num in nums) {
count++;
}
}
@@ -957,10 +947,8 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
```csharp title="array.cs"
/* 在数组中查找指定元素 */
int find(int[] nums, int target)
{
for (int i = 0; i < nums.Length; i++)
{
int find(int[] nums, int target) {
for (int i = 0; i < nums.Length; i++) {
if (nums[i] == target)
return i;
}